Elevator hatchway



(No Model;) 2 Sheets-Sheet l.

M. J. DALY.

BLEVATOR HATGHWAY.

No. 403.875. Patented May 21 1889.

(No Model.) 2 Sheets-Sheet 2. M. J. DALY. ELEVATOR HATCHWAY.

Patented May 21 1889.

III

WITNESSES; NVENTOR.

UNITED STATES PATEgT OFFICE.

MICHAEL J. DALY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO WILLIAM o. BARR, JR., OF SAME PLACE.

ELEVATOR- HATCHWAY.

SPEGIFICATION forming part of Letters Patent No. 403,875, dated May 21, 1889.

Application filed November 26, 1888. Serial No. .291,871. (No model.)

To all whom, it muy concern:

Be it known that I, MICHAEL J. DALY, of Pittsburg, in the County of Alleghny and i State of Pennsylvania, have invented a new and useful 'improvement in Devices for 'Operating Elevator-Hatchway Gates and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, formo ing part of this specification, in which- Figre 1 is a perspective View of my improved device applied to the gate of an elevator-shaft. Fig. 2 is a front elevation of a modified form of my improved device. Fig.

I 5 3 is a horizontal cross-section on the line w :r of Fig. 2. In Figs. 2 and 3 a modified form of the gate is shown.

Like symbols of reference indicate like parts in each.

In Fig. 1, 2 represents the platform of an elevator-car. 3 3 are the uprights of the frame of said car, which move between vertical posts 4 in the elevator-shaft; and 5 are the vertical posts or framings at the corners of `2 5 said shaft. 1 represents one of the floors of the building. In the opposite faces of the upright posts 5 are vertical slide grooves 6, in which a gate, 7, is fitted so that it may move vertically between these uprights. The gate is provided with counter-weights, arranged in the usual manner of acljustment of sashbalances in window-frames, the gravity of the counter-weights being conjointly a little less than that of the gate itself, so that the gate 3 5 when unrestrained will move slowly downward in the grooves 6. As these counterweights are'of the usual Construction and are well-known in the art, I have not illustrated them in the drawings.

40 8 is a cross-bar extending between the uprights 5 a short distance above the level to which the gate 7 is intended to be raised to permitfree access to the elevator, and 9 is a vertical catch which is pivotally connected at its upper end with the cross-bar 8, and at its lower end is provided with a hook, which is adapted to engage pin, IQ, on the gate, and thereby to hold the gate in an elevated position when the pin is in engagement therewith. The

lower end of the catch 9 is beveled, as shown in Fig. 1, so that it shall be adapted to automatically engage the pin when the gate is elev ated, and it is provided with a sprng,11,. which tends to hold the catch in permanent engagement with the pin. My improvement consists in the use of this catch, together With devices for automatically releasing it from the elevator-gate as the elevator leaves the floor either in one direction or the other, the manner and operation of the safety-gate be ing as follows:

WVhen the elevator-car reaches the level of the floor at which the gate is Situated, the gate may be raised in the groove 6 by a person on the car or on the floor, until the pin 10 engages the hooked end of the catch 9. The gate is thus held in an elevated position so long as the car renains stationary, but when the ,ar moves from the floor either up or down it automatically engages a tripping de- 7o vice, by which the catch is released from the pin and the gate is permitted to drop by gravity into place in front of the elevatorshaft. This tripping device consists of a vertical shaft, 12, which is journaled in bearngs 13 on one of the uprights 4. At one end of the shaft there is a projecting lever or arm, 14, which normally extends toward the' elevator-shaft, and at the other end is an arm, 15, which is connected by a rod or flcxible cord or chain, 16, with a bell-crank-lever connection, 17, the latter being connected by a rod or cord, 18, with the catch 9, as shown in Fig. 1. On one of the uprights 3 of the elevator-car, at the side thereof, are two camshaped projections, 19, which are so situate relatively to the arm 14 as to be adapted to engage therewith as the elevator passes the arm in its motions in the shaft.

The operation is as follows: When the elevator reaches the floor, one of the cams 19 is above and the other cam 19 below the arm 14. The gate may now be pushed up into the ele- Vated position shown in Fig. 1, in which it is retained by the catch 9. When the elevator moves away from the floor, either up or down, one of the cams 19, engaging the arm 14, will move this arm so as to turn the shaft 12, and thereby to pull on the connecting rod or cord 18, so as to disengage the catch 9 from oo the pin 10, Whereupon the gate will drop slowly to the level of the floor. If desired, there may be two of the gates 7 at each floor, one at each end of the platform of' the car. If. two gates are used, the catch 9 of the sec- 4 ond gate is connected with the bell-crank 17 without the necessity for du plicating the other parts.

The modification shown in Figs. 2 and 3 is similar to that illustrated in Fig. 1, except that the gate 7 instead of moving vertically in slideways, is a pivoted gate, constructed afterthe manner of the gatesin common use at railway-crossings. The gate is piVoted at b, and is weighted at the end c; but the gravity 'of this end is not quite equal to that of the long arm of the gate. In the use of this modification it is elevated by being raised into a vertical position into engagement with' the catch 9, which is located on the upright 5, and is constructed as clearly shown in Figs. 2 and 3. The arrangement for tripping this catch and allowing the gate to drop is substantially' the same as that whichl have described with reference to Fig, 1.

I do not desre to limit myself Strictly to that form of the nvention which I have shown and described, since it is susceptible of some modifications-e. g., instead of adapting the gate to be raised to permit access to 1 the elevator it may be arranged to be pushed and may be applied to elevators without cutting or mutilation of the car;

' jectng level' and connected by connections 16 and 18, and abell-crank lever, 17,` with the shaft and to operate said catch, substant'ally efficient means for preventing accidents, and 49 its Simplicity of Construction and cheapness recommend it to all who have occasion to use such devices. It is not apt to get out of order I claim-- h The 'combination of the vertically-movable gate, a catch, 9, for retaining the same, a vertical rotary shaft, `12, provided with a prosaid catch, and cams 19, fixed to one of the` uprights of the elevator-car, 'and adapted to engage said lever and thereby to rotate the as described.

In testimony whereof I have hereunto set my hand this 15th day of November, A. D. 1888,

I HAE J. DALY.

witnesses:

W. B. CORWIN, .I NO. K. SMITH. 

